Aeromonas hydrophila strains isolated from the same geographical region (southern Italy) but from different sources (sea sediments and human diarrhea cases) were characterized for the production of potential virulence determinants, such as production of cytotoxins, cytotonic toxins, hemolysin, and dermonecrotic factors and their capacity to adhere to human intestinal 407 cells in vitro. The results showed that isolates from both the sources produced all or some of the virulence factors which may be involved in the pathogenesis of Aeromonas-associated infections. Our study indicates that further epidemiological studies are necessary to elucidate the public health significance of infections caused by Aeromonas spp.
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Krovacek et al. (1994) studied this question.
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